Filtering device.



HOWSON- 953T AVAILABLE CO PILTBBING DEVICE. APPLICATION mum mm 24. 1912.

Patented Aug. 19, 1913.

2 SHEETS-SHEET 1.

B. B. HOWSQN. FILTBBING DEVIOB APPLICATION FILED JUL! 24, 1912.

Patented Aug. 19, 1913.

2 SHEETS-SHEET 2.

BEST AVAILABLE coPY PATENT OFFICE. 1

arms about nowsox, or surname CITY, gran.

FILTEBING 11m.

Specification of Letters .Patenfl Application filled July 24,1911. Serial-1T0. 711,854.

Patented Au 19,1913.

To all whom it may concern:

Be it known that I, ELLrs EDGAR HowsoN, a citizen of the United States, residingat Salt Lake City, in the county of Salt Lake and State of Utah, have invented a new and useful Filtering Device, of which the followin is a specification. j

y invention relates to im rovements in filtering devices in which the lte'rs are submerged; and the objects ,of my improvements are; first, to provide a device for placing .and using filter-leaves in several positions; second, arrangements whereby'better control is had of the filter-leaves, thereby reducin the wear-of the filtering medium and 0 taining a more even distribution of residue on the filter-leaves; third, unloading of the residue on the filter-leaves and dischargin said residue from a stationary tank containing the filter-leaves by one operation; fourth, placing of the filter-leaves in position for filtering and closing the door in the stationary tank containing the filter leaves by one operation. 7

I attain these objects by the device illustrated in the accompanying drawings in which Figure 1 is a vertical section with the door closed and the position the tiltable frame assumes while filtering; Fig. 1" is a vertical section of a part of the tiltable frame showing position assumed from the horizontal to the vertical; Fig. 2 is a ver tical section with the door open and the position tiltable frame assumes'when material on the filter leaves is being unloaded; Fig. 3 is a vertical section, ter leaf in unloading position; Fi 4 is a vertical section, front vlew, of the lter leaf in position for filtering; Fig. 5 is a rspective view of a part of the tiltable rame to which the filter leaf isattached; Fig. 6 is a perspective view of the filter frame and a section'of the filteringmedium; Fig. 7 is a vertical section of the filter leaf attached to the tiltable frame; Fig. 8 is a side view of the outside of an inclined tank set at an \angle of about from the horizontal. Fig. 9 is a vertical section, showing the filtering apparatus in position for filtering, between the horizontal and vertical. Fig. 10 shows the connection from the outlets 0 0.

Similar letters refer to similar parts throughout the several views.

The tiltable frame consists of the follow ing: two supports 1) on each of the two sides joined together and held parallel to each by front view of the fila; luralit of cross-pieces a,'parallel to each ot en T e two sides are held togetherand parallel by a plurality of shafts C (Figs. s

and 2), the plurality of the; long. r0

(Figs. -1, 2 and 5), and a plurality" of crosspieces I (Fig. 5) riveted to crosspiece a (Fig. 5%. the plurality of the shafts C, bearing in the boxes P (Fig. 4) the boxes P are rigidly attached to the interior side of an inclined tank, set at an an le of about 60 from the horizontal (Fig. 4%

i The filter leaf (Fig. 7) consists of the followin a rigid rame havin a'sheet iron partition diagonally through it 9" (Fig. 7), a short pi e O threaded at oneend and extending t rough each side of the frame (Fig. 7), the heavy iron screen 9 covering the top and bottom sides, the felt 9 covering the iron screen and the canvas 9 covering the felt all securely fastened to the frame.

Each filter leaf is attached rigidly to two crosspieces a, one on each side, (the two crosspieces in the same plane) by placing the back end of the filter-leaf under the crosspiece 9 (Fig. 5) and over the rod d, and bolting the front ends of the filter leaf through the holes 8 (Fig. 6) to the-lugs t (Fig. 5) on the crosspieces a, with the bolts 7 (Fig. 7 The filter leaves, being attached rigidly to two crosspieces a, which are paral el to eachother, the filter'leaves are parallel to each other and their movements conform to the movements of the crosspieces a, (Figs. '1, 2 and 1).

Means by which the filter leaves attached rigidly to the tiltable frame, as described, are moved and'held at any angle desired,

from the horizontal to the vertical, are as follows: A supporting rod R (Figs.'1 and 2) is attached to the bottom crosspiece a, on

each side of the tiltable frame. To the sup-- portin rods R, and midway between the two si es, is attached loosely, the top end of the arm f (Fig. 2). The bottom end of the arm 1 is attached loosely to 3. lug in the center of the door 9 (Fig. 2). Two rests R (Figs. 1 and 2), one on each side of the arm 1', are removably secured bythe set screws (8) passirEthrough the holes in the base member-(8 of the rests (R) and into the threaded holes in the door 9 (Fig. 1).

Rests (R) of different lengths may be subis hinged at a: (Figs. 1

stituted. The door ame it (Figs. 1 and 2),

and 2) to they door which is rigidly attached to'the bottom of The tiltable frame is carried by.

I the inclined tank H (Fig. 1). To the door g is attached the lever m (Figs. 1 and 2) and the screwwheel 7: (Figs. 1 and 2). Two rings n are attached to the lever m, to which counterbalances may be attached if desired. The plurality of the shafts C, bearing in the boxes P (Figs. 3 and 4), act as the main axes. The lurality of the short rods 0 (Figs. 1 and 2), and the plurality of the long rods d (Figs. 1 and 2) act as the auxiliary axes.

The filter leaves each having a diagonal partition 9 (Fig. 7), formin two compart-, ments in each leaf, and each compartment having a separate discharge 0, makes it possible to filter throu h both sides at the same time or either si e separately, so that in case of a defective filtering medium, only the defective side is put out of commission.

A defective filtering medium is disclosed by the turbidity of the solution as it passes through the glass tube A (Fig. 4), and the side of the filter leaf showing turbid solution is cut out of commission by means of the valve A (Fig. 4), which controls the passageway to the interior of the compartment covered by the defective filtering medium.

The communication between the outside of the inclined tank and the interior of each compartment of each filter leaf is through the pipe 0 (Fig. 7), which is connected with a union B (Fig. 4) to a rubber tube B (Fig. 4). The rubber tube is of such length that it conforms to the different positions the filter leaf assumes during opera-' tion. The other end of the rubber tube is connected to a nipple, said nipple extending through the side of the tank H (Fig. 4).

To the end of the nipple extending through the tank H is connected a valve A (Fig. 4), which regulates the communication passageway between the interior of the filter leaves and the outside receptacle at (Fig. 4). The glass tube A (Fig. 4) is connected to the valve A and the receptacle u (Fig. 4).

The manner of operating the filtering device is as follows: The tiltable frame within a stationary inclined tank is held in the desired position by the rests R and the closed door 9. Then the inclined tank is filled with the material to be treated, from a storage tank, said material entering tank through pipe w (Fig. 4). The valves A A (Fig. 4) are opened and with pressure the filtered solutionpasses into the interior of the filter-leaves through the filtering medium, and from the interior of the filter outside. By inspection at valve G (Fig. 8)

it is known when sufiicient residue has accumulated on the exterior sides of the filter leaves, then filtering is stopped and any untreated material in tank is returned through pipe w to storage tank for untreated material (said pipe w, by a valve arrangement acts as an inlet and an outlet to storage tank for untreated material), then by means of the lever m, the door 9 is opened which pulls down on the supporting rod R by means of the arm f, which tilts the filter leaves to a vertical position. The slight jar on the rubber bumper 2 (Fig. 8) when the frame is tilted and the sudden change of position of the accumulated particles of residue, insure a quick release of the residue from the filter leaves. The residue falls down the inclined bottom of the tank and out of the door g. Then, by means of the levers m, the door 9 is closed and the rests R coming in contact with the supporting rod R raises the tiltable frame to the desired position, (the rests R are of various sizes and interchangeable Figs. 1

and 9) for again resuming operations, and

2. In a filtering device, a tiltable frame comprising, parallel supporting side members (6), parallel cross members (a), a plurality of axial cooperative suspending members (C), a plurality of cotiperating axially binding members (d and e), a plurality of rigid binding members (q and p), a supporting member (R) and members (If) to which filter leaves are removably secured.

3. In a filtering device, in combination with a receptacle with a movable closure, a hinged arm member (f) and removably secured rest members (R) on the inner side, and a rigid leverage member (m) on the outer side of the movable closure.

4. In a filter leaf, the combination of a frame, filtering media upon the faces of the frame, means within the frame for dividing the same into a plurality of filtering compartments, and a separate controllable outlet communicating with the interior of each compartment.

5. In a filtering device, the combination, of a tiltable frame, filter leaves carried by the frame, means for suspending the tiltable frame, and adjustable means carried by the movable closure for operating the tiltable frame.

ELLIS EDGAR HOVVSON. Witnesses:

J AS. M. HOWSON, HENRY T. MCEWAN. 

